Use black fuse beads for the body and yellow or green for the cat's eyes. The eyes will be even more effective if you have some "glow in the dark" beads! The cat also looks good on a background of dark blue or orange beads.
We have quite a collection of these little cats flying around on the front of our fridge on broomsticks at the moment! They make the perfect witch's cat for Halloween, but are cute enough to be enjoyed all year round.